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发明名称
RATIO DIFFERENTIAL RELAY
摘要
申请公布号
JPS52116853(A)
申请公布日期
1977.09.30
申请号
JP19760032634
申请日期
1976.03.26
申请人
HITACHI LTD
发明人
ONO TOSHIO
分类号
H02H3/28
主分类号
H02H3/28
代理机构
代理人
主权项
地址
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